A genome-wide association study of suicidal behavior

Genome wide array studies have reported limited success in identifying genetic markers conferring risk for suicidal behavior (SB). This may be attributable to study designs with primary outcome other than SB. We performed a GWAS on suicides and cases with a history of nonfatal suicide attempts compared with psychiatric controls and healthy volunteers. A consortium of USA, Canadian and German teams assembled two groups of cases (suicide attempters and suicides, N = 577) and non‐attempter psychiatric and healthy controls (N = 1,233). Logistic regression was used to test genotype‐suicidal behavior association. The test was repeated separating suicide attempt and completed suicide as outcomes. No SNP reached genome‐wide significance, but several SNPs within STK3, ADAMTS14, PSME2, and TBX20 genes reached P